Interface for the encoder of the red fischertechnik motors

Dependencies:   NeedfulThings


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    Simple Interface for the simple encoder of the red fischertechnik motors.

    The interface counts both, rising and falling edges, resulting in 150 counts per revolution. The interface also provides a speed measurement updated with each edge.

    Connect the green wire to GND, the red one to +3.3V and the black signal line to any of mbed numbered pins. Additionally connect the signal line via a pullup resitor to +3.3V. A 10K resistor works fine.

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